不同进水条件对SBR工艺脱氮除磷效能的影响  

Influence on Nitrogen and Phosphorus Removal by SBR Process

作　　者：杨菲菲[1] 马放[1,2] 魏利[2] 姜欣欣[2] 张倩[3] 高杰[2] 张晓昕[2] 

机构地区：[1]辽宁大学环境学院,辽宁沈阳110036 [2]哈尔滨工业大学市政环境工程学院,城市水资源与水环境国家重点实验室,黑龙江哈尔滨150090 [3]武汉大学土木建筑工程学院,湖北武汉430071

出　　处：《环境科学与技术》2011年第6期127-131,共5页Environmental Science & Technology

基　　金：国家水专项(2008ZX07202-005);国家自然科学基金(50778052);城市水资源与水环境国家重点实验室开放课题项目资助(QA200810)

摘　　要：采用人工配水,研究进水在不同pH值,碳源类型,碳氮比条件下,厌氧/好氧/缺氧(A/O/A)SBR工艺对生物法脱氮除磷效能的影响。结果表明:不同的进水条件对反应器的影响较大,当pH值为7.5,乙酸钠为碳源,碳氮比为1.4时,反应器运行效果最佳,系统对PO43--P,NH4+-N的去除率分别达到97.28%,99.5%。NO3--N,NO2--N的出水浓度平均为2.8 mg/L,0.9 mg/L。进水条件良好时,A/O/A SBR反应器适合反硝化聚磷菌的富集,解决了反硝化菌和聚磷菌世代周期不同,争夺碳源等矛盾,能够很好的实现同步脱氮除磷。Effects of different pH value,carbon source,C/N ratio of flow on nitrogen and phosphorus removal of A/O/A SBR process were investigated by using synthetic domestic wastewater as feed.Results showed that the reactor was influenced by different flow conditions greatly.When pH value was kept as 7.5,sodium acetate as carbon source,and C/N ratio was kept as 1.4,the highest nitrogen and phosphorus removal efficiency was achieved.Phosphorus uptake rate was averaged at 92.48% and denitrification rate reached 99.5%.Effluent concentrations of NO3——N and NO2——N were followed as 2.8 mg/L and 0.9 mg/L respectively.Denitrifying polyphosphate-accumulating organisms were enrichment in A/O/A SBR reactor,which can solve the problem of competition for carbon,and different bacteria generation time between denitrifying bacteria and phosphorus.Nitrogen and phosphorus removal were achieved simultaneously in A/O/A SBR reactor for denitrification and phosphorus.

关 键 词：A/O/A SBR 脱氮除磷 反硝化聚磷菌 

分 类 号：X703.1[环境科学与工程—环境工程]